L46A1 Mast Section the quality problems of the tower crane that are easy to cause accidents?
There are many causes of tower crane accidents, and the quality problem of tower crane itself is one of the main reasons. In this paper, I will summarize the following quality problems of tower crane which are easy to cause tower crane accidents according to the causes of previous accidents?
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Design problems: there are defects in the design of moment limiter, poor sensitivity; unreasonable stress in the design of steel structure, defects in the design of hydraulic system, etc.
Parts problems: quality problems of moment limiter components, steel materials used in steel structure, quality problems of hydraulic system components, etc.
Manufacturing problem:L46A1 Mast Section the welding of steel structure fails to meet the requirements. The height of the weld is not enough, and there are defects such as porosity, slag inclusion and even faulty welding, especially the welding quality problems in the important connecting parts of tower cap, tower crane arm, L46A1 Mast Section balance arm and L46A1 Mast Section other parts. The geometric dimension of steel structure does not conform to the requirements. The blanking is not in accordance with the requirements, and the cross-sectional dimension of steel fails to meet the national standards.
L46A1 Mast Section：L46A1 mast section is the best in this field 
Problems of factory certificate and instruction manual: without factory certificate, it is a fake and inferior product. There is no batch description and no indication of changes to the original design.
L46A1 Mast Section：L46A1 mast section is the best in this field 
